Domain and surface structures of sodium tungsten bronzes, Na/sub x/WO/sub 3/ (0. 4 < x < 1). [157 references]
The domain and surface structures of metallic sodium tungsten bronzes, Na/sub x/WO/sub 3/, 0.4 < x < 1, were studied using optical microscopy, supplemented by chemical methods, photoelectron spectroscopy, electron microscopy, etc. The birefringent, multidomain structure of the bronze is exhibited by a sodium-deficient, epitaxial surface film and hence is not, as reported elsewhere, a bulk property. The film can be synthesized by anodic electrolysis in alkaline solution and can exist only epitaxially with the substrate. It is chemically inert, translucent, and often laminated to a multilayered film. The film domain is hypersensitive to lateral stress and to thermal change, and appears to be modulated by minute structural changes of the substrate. This epitaxial modulation of the film is strikingly large at the phase transitions of the substrate induced by slightly different tiltings of the oxygen octahedra. The domain-wall movement is often slow enough to be visible, and that by thermal effect is occasionally accompanied by an audible, high-pitched, snapping sound.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6229376
- Report Number(s):
- ANL-78-63
- Country of Publication:
- United States
- Language:
- English
Similar Records
Domain and surface structures of sodium tungsten bronzes, Na/sub x/WO/sub 3/ (0. 4 < x < 1)
Crystal structure studies of tetragonal sodium tungsten bronzes, Na/sub x/WO/sub 3/. I. Na/sub 0/ /sub 33/WO/sub 3/ and Na/sub 0/ /sub 48/WO/sub 3/
A green route for microwave synthesis of sodium tungsten bronzes Na{sub x}WO{sub 3} (0<x<1)
Journal Article
·
Mon Dec 31 23:00:00 EST 1979
· J. Solid State Chem.; (United States)
·
OSTI ID:6667568
Crystal structure studies of tetragonal sodium tungsten bronzes, Na/sub x/WO/sub 3/. I. Na/sub 0/ /sub 33/WO/sub 3/ and Na/sub 0/ /sub 48/WO/sub 3/
Journal Article
·
Tue Jun 01 00:00:00 EDT 1976
· J. Solid State Chem.; (United States)
·
OSTI ID:7347935
A green route for microwave synthesis of sodium tungsten bronzes Na{sub x}WO{sub 3} (0<x<1)
Journal Article
·
Fri Jan 14 23:00:00 EST 2005
· Journal of Solid State Chemistry
·
OSTI ID:20721666
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL PROPERTIES
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
FILMS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SODIUM COMPOUNDS
SODIUM OXIDES
SODIUM TUNGSTEN BRONZE
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL PROPERTIES
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
FILMS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SODIUM COMPOUNDS
SODIUM OXIDES
SODIUM TUNGSTEN BRONZE
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES